@slamjam I myself have two ER707-M2 with site to site vpn, there have never been such problems, do you have any screenshots of the vpn configuration? Do you have other VPN services on the router such...

@nicolati I haven't tested with mac autetication but I'm pretty sure there's no difference. Have you turned off random mac address on your phone then? if it is on, you will get a new mac every time...

@Savgar check your network cable, try and connect the access point directly to the router with short patch cables that you know work.

@bonestaak NOP

@bonestaak goto switch config and vlan interface. then edit

@gcsljim to get it to work with mobile client Edit the exported OVPN file, delete the no from the string comp-lzo no